Change list:
- Fixes issue where there was no discernible difference between low and
medium water detail
-Adds support for pixel shader 3.0
-Enables the Heat distortion and soft shadows features

Note: If you are experiencing blocky/missing graphics (typically found on Nvidia 8xxx and up class cards), please install the Graphics Update found here: http://support.aspyr.com/index.php?x=&mod_id=2&root=203&id=573